Conveyer cart for masonry saws



March 8, 1949. N. c. COATES CONVEYER CART FOR MAJSONRY SAWS 2 'Sheets-Shet 1.

Filed OCT.- 28, 1946 1 N VE N TOR. /Ve///r 6. 600226 A TTORN Y.

March 8, 1949. N. c. COATES CONVEYER CART FOR MASGNRY SAWS 2 Sheets-Sheet 2 Filed Oct. 28 1946' 1 N VE N TOR. We/(g/y 0 604226 E N R O T Patented Mar. 8, 1949 UNITED STATES PATENT OFFICE (PONVEYEE CART FOR MASONRY SAWS Neligh C. Coates, Kansas City, Mo.

Application October 28, 1946, Serial No. 706,213

7 Claims. 1

This invention relates to the art of cutting material such as masonry or the like and has for its primary aim the provision of improvements to the conveyor or cart forming a part of equipment which has heretofore been perfected and that is shown for example in my previously issued U. S. Letters Patent No. 2,171,024, dated August 29, 1939.

One of the important objects of the invention is the provision of a conveyor cart for masonry saws having structure for releasably clamping the material in place for engagement by the cutting disk of the saw, which structure is capable of maintaining the material being cut at an angle to the plane of the cutting disk.

Other aims of the invention are to provide a conveyor cart of the aforementioned character and for machines of the type disclosed in the above identified U. S. Letters Patent, that will hold the unit or material being cut in a position with respect to the disk where either a simple or compound planar, angular face of severance may be created with but a single setting of the machine; to. provide a shiftable holding element for the material being cut; to compensate for movement toward and from the cutting disk as tipping incident to setting the equipment occurs to provide adjustable parts for the material holding structure that are capable of indicating to the operator the precise angularity of such structure and the material to the plane of the cutting disk; and to provide an unique face plate for the supporting platform of the material being cut through the medium whereof, the said material may be positioned at desired predetermined angles to a line perpendicular to the plane of the cutting disk.

A large number of minor objects are important and will appear during the following description of that form of the invention chosen for illustration and shown in the accompanying drawings, wherein:

Fig. 1 is a perspective view of a conveyor cart for masonry saws made in accordance with the present invention and showing. the same in operative position with a cutting member forming a part of a complete masonry saw.

Fig. 2 is a fragmentary cross-sectional view taken on line IIII of Fig. 1.

Fig. 3 is a detailed, fragmentary sectional view taken on line III-III of Fig 1.

Fig. 4 is a fragmenta'r cross-sectional view through a portion of the cart illustrating the tippable platform thereof in an angular position with respect to the plane of the cutting disk.

Fig. 5 is a vertical sectional view taken on line V-V of Fig. 2 and looking in the direction of the arrows; and

Fig. 6 is a longitudinal central sectional view through the indicating face plate with the same entirely removed from association with the remaining elements of the assembly.

Cutting member if), forming one of the essential parts of the entire masonry sawing machine, generally designated by the numeral 12 and fully shown and described in the. above identified U. S. Letters. Patent, is rotatable about its axis by power means and shiftable vertically through an arcuate path of travel as the equipment is 1 operated.

The cart IA. is normally horizontally disposed and rides along tracks It forming a part of machine l2. This cart i4 includes a stop and gauge assembly 18 mounted on one section 20 of cart 54 and through the medium whereof the material to be severed may be placed with respect to the plane of cutting :disk I. Another section of the entire cart I4 is in the nature of platform 22, shiftably carried by plate 24 that is hingedly mounted as at 26 directly to frame 28 forming a component part of the cart assembly [4. The means here shown to shiftably mount platform 22 upon plate 24 comprise slots 30 formed inplatform 22, screw-threaded studs 32 projecting upwardly and outwardly from plate 24 and wing nuts 34 in screw-threaded engagement with studs 32. Thus, when wing nuts 34 are manipulated, platform and plate 22 and 26 respectively, may be held together or released for relative shifting in response to the desire of the operator.

The purpose of providing means for shiftably mounting platform 22 will be more fully hereinafter set forth. Plate 25 has a wing 3t depending from each end respectively thereof and indicia 38 on the arcuate marginal edge of the forward wing 36 serves to inform the operator the degree of angularity of platform 22 when the same is being set.

An arcuate slot 40 on a radius struck from the axis of hinge 26 is provided in each wing 36 and through each of these slots 49 projects a threaded end of a rod 42 carried by frame 28. Wing nuts 44 are in threaded engagement with the said ends of rod 42 and manipulation of these wing nuts will serve to hold or free Wings 36, plate 24 and platform 22 for movement to and from a position in the same plane as section 20 of cart M. The edge of frame 28 next adjacent to the arcuate edge of the forward wingto and upon which indicia 38- is provided, will serve as a. stationary guide point for the operator when shifting the structure just identified to desired angles with respect to the plane of cutting member I8.

The proximal edges of section 20 and platform 22 are normally in spaced apart relation to present a groove 46 to receive cutting member ID after it has severed or passed through the material being out. As platform 22 is swung about the axis of hinge 26, the edge thereof remote from hinge 26 will slightly shift from the plane of cutting disk IU. When the material being cut is mounted therefore, it may be necessary or desirable to readjust platform 22 in a position in closer proximity to disk Ill for the purpose of affording adequate support. Wing nuts 34 may then be loosened and platform 22 shifted toward disk ID as studs 32 travel in slots 30.

A post 58 anchored to platform 22 at each end respectively thereof, carries both a follower jaw 58 and a clamp bar 52. The outermost portions of post 68 are threaded to receive adjusting nuts 54 that bear against clamp bar 52. A toggle lever 55 pivotally mounted as at 58 to jaw 50' has a transverse roller 60 that bears against the under-side of bar 52 as lever 55 is manually manipulated for movement about its mounting 58 A stop 82 limits the movement of lever 56 in one direction and a part of the lever strikes the upper surface of bar 52 when the lever has reached the end of its path of travel in the opposite direction. Thus, the manipulation of this lever 56 will increase the distance between jaw 50 and bar 52 but bar 52 will remain stationary as jaw 50 travels downwardly along post 58 onto which both the jaw and the bar 55 and 52 respectively, are threaded, as clearly shown in Fig. 1.

A coil spring 54 is wound about each post 48 respectively and one end of each spring bears against platform 22 while the opposite end thereof bears against jaw 50. Thus, jaw 50 is springloaded and urged toward bar 52 against the pressure exerted through lever 56 when the structure just described is manipulated.

A series of pillow blocks 65 of resilient material such as rubber or the like is mounted along the under side of follower jaw iii). blocks that directly engage the material being out, which material is designated by the numeral 68 in Figs. 2 and 4. When material 68 is placed upon platform 22, nuts 54 are manually manipulated along the coarse threads on posts 53, a quick movement of the follower jaw 50 and blocks 66 down against material 68 is thereby accomplished. Material of various sizes is received by the holding means with speed and convenience. After so placing or shifting the follower jaw and clamp bar assembly against the pressure of springs 54, the lever 55 is moved about its axis of rotation and follower jaw 55 is forced down against material 68 With sufficient pressure to maintain the material in place for treatment.

When platform 22 is in an angular position to the horizontal as illustrated in Fig. 4, the cut ting disk passes through material 68 at an angle indicated by indicia 38. If perchan-ce the angle of out should be a compound angle and it is desired to place the material 68 to also form a surface at an angle to a line perpendicular to the plane of cutting member ID, then the face plate 'lil is moved to position upon platform 22. This face plate ill is quickly attachable through the medium of suitably formed notches 12 inthev ends thereof, which notches will permit engag It is these ing springs 64 and the upstanding lug 14 provided on platform 22.

A shiftable section or marker 15 rotatably carried on face plate 10 by any suitable means such as the rivet 16, has a number of parallel straight lines 18 extending thereacross, one of which lines 78 intersects the axis of rotation of marker 15. Indicia 8*0 printed or otherwise formed directly on face plate 10 adjacent to the periphery of marker 15, cooperate .with the central line 18 extending through the axis of rotation of marker 15 in teaching the opera-tor the angularity of line 18 with respect to a line perpendicular to the plane of cutting member I 5. Thus, if the material 68 is to be cut at an angle to the said line, one edge of the material is placed in register with one of the lines I8 before being clamped in position.

Obviously, this face plate and marker 70 and 15 respectively, may be used with platform 22 in a, horizontal position or in the same plane as section 20, but if a compound cut is to be made, both the marker 75 and scale 38 is brought into play to expeditiously indicate to the operator the precise angle of cut that will be created when disk Hi is passed through material 58. Thus, the versatility of the adjustable portion of the conveyor cart will permit settings that have heretofore been impossible when using machines such as that shown in my above identified Letters Patent.

The problems incident to forming an accurate compound or single angular out are readily solved through the instrumentality of the structure just described and while one embodiment of the invention has been detailed, it is obvious that modifications may be made without departing from the spirit .of the invention or scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a masonry saw having a flat cutting disk rotatable about the axis thereof and a reciprocable conveyor cart to support the material being cut, a tippable platform on the cart for holding the material at desired angles to the plane of the cutting disk, said platform being separately shiftable toward and from the cutting disk in any tipped position.

2. In a masonry saw having a fiat cutting disk rotatable about the axis thereof and a reciprocable conveyor cart to support the material being cut. a tippable platform on the cart for holding the material at desired angles to the plane of the cutting disk, said platform being separately shiftable toward and from the cutting disk in any tipped position; and means for releasably clamping the material in place on the said structure, said means being shiftable and tippable with said platform.

3. In a masonry saw having a fiat cutting disk rotatable about the axis thereof and a reciprocable conveyor cart to support the material being cut, structure on the cart for holding the material at desired angles to the plane of the cutting disk, comprising a tippable platform; and a face plate on the platform having a shiftable marker thereon for guiding the placement of the article being cut at desired angles to the plane of the cutting disk.

4. In a masonry saw having a fiat cutting disk rotatable about the axis thereof and are reciprocable conveyor cart to support the material being cut, structure on the cartfor holding the material at desired angles to the plane of the cutting disk, comprising a tippable platform; and a face plate on the platform having a shiftable marker thereon for guiding the placement of the article being cut at desired angles to the plane of the cutting disk, said face plate having means cooperating with parts of the platform for removably mounting the same in operative position.

5. In a masonry saw having a flat cutting disk rotatable about the axis thereof and a reciprocable conveyor cart to support the material being cut, structure on the cart for holding the material at desired angles to the plane of the cutting disk, comprising a tippable platform; and a face plate on the platform having a shiftable marker thereon for guiding the placement of the article being cut at desired angles to the plane of the cutting disk, said shiftable marker comprising a rotatable disk having a series of parallel straight lines extending across the face thereof, one of said lines intersecting the axis of rotation of the disk.

6. In a masonry saw having a flat cutting disk rotatable about the axis thereof and a reciprocable conveyor cart to support the material being cut, structure on the cart for holding the material at desired angles to the plane of the cutting disk, comprising a tippable platform; means for mounting the platform for reciprocation toward and from the plane of the cutting disk; and means for releasably clamping the material on the platform comprising a follower jaw; means for initially positioning the jaw against the material on the platform, and manually manipulable elements for forcing the jaw against the material to be out after the jaw has been initially positioned.

'7. In a masonry saw having a flat cutting disk rotatable about the axis thereof and a reciprocable conveyor cart to support the material being cut, structure on the cart for holding the material at desired angles to the plane of the cutting disk, comprising a tippable platform; means for mounting the platform for reciprocation toward and from the plane of the cutting disk; and means for releasably clamping the material on the platform comprising a spring loaded follower jaw, and parts on the jaw for exerting a clamping force upon the material after the follower jaw has been moved into engagement therewith against the force of the spring.

NELIGH C. COATES.

REFERENCES CITED ihe following references are of record in the file of this patent:

UNITED STATES PATENTS 

